Machine for skiving leather



(No Model.) B BOWDEN MACHINE FOR SKIVINGYLEATHER.

No. 313,167. Patented Mar. 3,1885.

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MACHINE FOR sk SPECIFICATION forming part of Letters A pplieation filedSeptemb To ctZZ whom if may concern:

Be it known that I, RUssELL BowDEN, of Marblehead, county of Essex.State of Massa chusetts, have invented an Improvement in MachinesforSkiving Leather, of which the following description, in connection withthe accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention has for its object the construction of a machine forskiving leather; but it is more especially adapted for use in skivingordinary heel lifts and half-soles, and also spring-lifts, so called,the latter being illtended for use in the manufacture of what is knownas springheel shoes for children. In this latter class of shoes one ormore lifts are placed between the heel portion or eX- tension of theouter sole and the inner sole. To this end it is necessary to skive theforward portion of such inserted spring-lifts, or to taper them to afeather-edge, to enable a tightjoint to be made and to provide awellmade shoe.

With my invention I am enabled to easily and quickly skive leather to afeather-edge, so that the cut will be c1ear,sharp, and regular.

The invention consists, primarily, of the combination, with a slottedbed or support and a knife adapted to be moved over the bed, of a tableinclined with relation to the bed or support, and having one endprojecting into the slot of said bed, and clamping mechanism adapted toretain one or more lifts on said inclined table so that a portion of thelift or lifts will project through the seat of the bed and above theplane of movement of the cuttingedge of the knife, substantially ashereinafter fully described, and particularly pointed out in the claims.

Figure 1 shows in plan View a leather-skiving machine embodying myinvention, and Fig. 2 is an under side viewthereof, and Fig. 3 isalongitudinal vertical section of the same, shown as supported upon asuitable frame the section being in the line or w.

The bed or support A is provided with an oblong slot, in which is placeda table, B, the upper beveled endof which is held in the said slot by abolt, a, extended through slots in a to it suitable nuts, a". The rearend of the bed has ears I), that receive a bolt, 1), which wine LEATHER.

Patent N0.313,l6'7, dated March 3, 1885.

or 22, 1894. (No model.)

is extended through slots If in the brackets 0, depending from the bedA, the end of the bolt having applied to it suitable nuts, 0, by

which the bolt and consequently the bed may be adjusted in any desiredangular position with relation to the surface of the table. The greaterthe angle of difference between the level of the bed and of the tablewithin a right angle the shorter and steeper the bevel which will beleft at the exposed upper end of the arch-piece 0, attached to the bedby the.

screws 0.

The bed or support A, as herein shown, has at its under side threescrews or bolts provided with heads and washers of suitable size toserve as supports for the sliding clamp, the under side of which isbeveled, the said screws or bolts extending through slots 4 at theopposite side edges of the said clamp and near its rear end. The clampf, at its rear end, has an upright, f which is joined by a stiff spiralspring, 9, with the knife-carrying lever and, as herein shown, to one ofthe bolts, d, so that the movement of the knife-carrying lever carrieswith it the said clamp.

The piece of leather to be skived will be placed upon the inclined tablefrom the front or right-hand end thereof, Fig. 3.

I have supposed that a two-layer springheel lift has been so applied tothe bed, as shown by dotted lines, the portion which is to be cut fromthe said lift being left to protrude above the level of the bed orsupport. The leather having been applied to the bed, the operator willnow pull the lever in the direction of the arrow, Fig. 1, which willcarry the knife forward, and at the same time the clamp f, which usuallyoccupies a position in advance of the eutting-edge of the knife, iscarried forward by the spring (Z and is caused to firmly clamp the saidleather upon the table just in advance of the arrival of the edge of theknife in contact with the leather, the clamp acting to prevent anylongitudinal move- ISO ment of the leather While the knife, which ismade to sweep over it, cuts or skives from the leather all that portionthereof which is left protruding from the bed A. The spring 8 issufficiently stiff to move the clamp back- Ward as the knifecarryinglever is moved backward. The spring 9 enables the clamp to adapt itselfto varying thicknesses of leather.

The leather article having been beveled or skived, and the clamp andknife drawn back, the said article is discharged from the lower end ofthe table by hand or by the insertion of a second article to be skived.

Heretofore in skiving-machincs it has been customary for the knife toenter the edge of the material when commencing to cut the same; but bysuch plan a feather-edge cannot be properly formed.

1. In a leather skiving machine, a slotted bed or support and a knifeadapted to be moved over the said bed or support, and an adjustableinclined table having its forward end arranged in the slot andsubstantially flush with the plane surface of said bed, combined with aclamp to clamp or retain on such table the material'to be cut, as andfor the purpose set forth.

2. In a leather skiving machine, a slotted bed or support, the pivotedknife-lever, and an attached knife adapted to be moved over the surfaceof the bed as described, and the adjustable table inclined with relationto the bed, one end of the table being arranged in the slot of said bed,combined with the sliding clamp to retain the leather to be skived onthe inclined table, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

, RUSSELL BOWDEN.

Witnesses:

G. W. GREGORY, B. J. NoYEs.

